455 lines
15 KiB
C
455 lines
15 KiB
C
/* gtkatspitextbuffer.c - GtkTextBuffer-related utilities for AT-SPI
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*
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* Copyright (c) 2020 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.Free
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*/
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#include "config.h"
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#include "gtkatspitextbufferprivate.h"
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#include "gtkatspipangoprivate.h"
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#include "gtktextbufferprivate.h"
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#include "gtktextviewprivate.h"
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#include "gtkpangoprivate.h"
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void
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gtk_text_view_add_default_attributes (GtkTextView *view,
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GVariantBuilder *builder)
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{
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GtkTextAttributes *text_attrs;
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PangoFontDescription *font;
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char *value;
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text_attrs = gtk_text_view_get_default_attributes (view);
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font = text_attrs->font;
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if (font)
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gtk_pango_get_font_attributes (font, builder);
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g_variant_builder_add (builder, "{ss}", "justification",
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gtk_justification_to_string (text_attrs->justification));
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g_variant_builder_add (builder, "{ss}", "direction",
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gtk_text_direction_to_string (text_attrs->direction));
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g_variant_builder_add (builder, "{ss}", "wrap-mode",
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gtk_wrap_mode_to_string (text_attrs->wrap_mode));
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g_variant_builder_add (builder, "{ss}", "editable",
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text_attrs->editable ? "true" : "false");
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g_variant_builder_add (builder, "{ss}", "invisible",
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text_attrs->invisible ? "true" : "false");
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g_variant_builder_add (builder, "{ss}", "bg-full-height",
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text_attrs->bg_full_height ? "true" : "false");
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g_variant_builder_add (builder, "{ss}", "strikethrough",
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text_attrs->appearance.strikethrough ? "true" : "false");
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g_variant_builder_add (builder, "{ss}", "underline",
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pango_underline_to_string (text_attrs->appearance.underline));
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value = g_strdup_printf ("%u,%u,%u",
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(guint)(text_attrs->appearance.bg_rgba->red * 65535),
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(guint)(text_attrs->appearance.bg_rgba->green * 65535),
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(guint)(text_attrs->appearance.bg_rgba->blue * 65535));
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g_variant_builder_add (builder, "{ss}", "bg-color", value);
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g_free (value);
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value = g_strdup_printf ("%u,%u,%u",
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(guint)(text_attrs->appearance.fg_rgba->red * 65535),
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(guint)(text_attrs->appearance.fg_rgba->green * 65535),
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(guint)(text_attrs->appearance.fg_rgba->blue * 65535));
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g_variant_builder_add (builder, "{ss}", "bg-color", value);
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g_free (value);
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value = g_strdup_printf ("%g", text_attrs->font_scale);
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g_variant_builder_add (builder, "{ss}", "scale", value);
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g_free (value);
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value = g_strdup ((gchar *)(text_attrs->language));
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g_variant_builder_add (builder, "{ss}", "language", value);
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g_free (value);
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value = g_strdup_printf ("%i", text_attrs->appearance.rise);
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g_variant_builder_add (builder, "{ss}", "rise", value);
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g_free (value);
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value = g_strdup_printf ("%i", text_attrs->pixels_inside_wrap);
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g_variant_builder_add (builder, "{ss}", "pixels-inside-wrap", value);
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g_free (value);
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value = g_strdup_printf ("%i", text_attrs->pixels_below_lines);
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g_variant_builder_add (builder, "{ss}", "pixels-below-lines", value);
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g_free (value);
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value = g_strdup_printf ("%i", text_attrs->pixels_above_lines);
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g_variant_builder_add (builder, "{ss}", "pixels-above-lines", value);
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g_free (value);
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value = g_strdup_printf ("%i", text_attrs->indent);
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g_variant_builder_add (builder, "{ss}", "indent", value);
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g_free (value);
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value = g_strdup_printf ("%i", text_attrs->left_margin);
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g_variant_builder_add (builder, "{ss}", "left-margin", value);
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g_free (value);
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value = g_strdup_printf ("%i", text_attrs->right_margin);
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g_variant_builder_add (builder, "{ss}", "right-margin", value);
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g_free (value);
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gtk_text_attributes_unref (text_attrs);
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}
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char *
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gtk_text_view_get_text_before (GtkTextView *view,
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int offset,
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AtspiTextBoundaryType boundary_type,
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int *start_offset,
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int *end_offset)
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{
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GtkTextBuffer *buffer;
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GtkTextIter pos, start, end;
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buffer = gtk_text_view_get_buffer (view);
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gtk_text_buffer_get_iter_at_offset (buffer, &pos, offset);
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start = end = pos;
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switch (boundary_type)
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{
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case ATSPI_TEXT_BOUNDARY_CHAR:
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gtk_text_iter_backward_char (&start);
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break;
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case ATSPI_TEXT_BOUNDARY_WORD_START:
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if (!gtk_text_iter_starts_word (&start))
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gtk_text_iter_backward_word_start (&start);
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end = start;
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gtk_text_iter_backward_word_start (&start);
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break;
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case ATSPI_TEXT_BOUNDARY_WORD_END:
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if (gtk_text_iter_inside_word (&start) &&
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!gtk_text_iter_starts_word (&start))
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gtk_text_iter_backward_word_start (&start);
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while (!gtk_text_iter_ends_word (&start))
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{
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if (!gtk_text_iter_backward_char (&start))
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break;
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}
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end = start;
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gtk_text_iter_backward_word_start (&start);
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while (!gtk_text_iter_ends_word (&start))
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{
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if (!gtk_text_iter_backward_char (&start))
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break;
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}
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break;
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case ATSPI_TEXT_BOUNDARY_SENTENCE_START:
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if (!gtk_text_iter_starts_sentence (&start))
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gtk_text_iter_backward_sentence_start (&start);
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end = start;
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gtk_text_iter_backward_sentence_start (&start);
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break;
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case ATSPI_TEXT_BOUNDARY_SENTENCE_END:
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if (gtk_text_iter_inside_sentence (&start) &&
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!gtk_text_iter_starts_sentence (&start))
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gtk_text_iter_backward_sentence_start (&start);
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while (!gtk_text_iter_ends_sentence (&start))
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{
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if (!gtk_text_iter_backward_char (&start))
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break;
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}
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end = start;
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gtk_text_iter_backward_sentence_start (&start);
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while (!gtk_text_iter_ends_sentence (&start))
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{
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if (!gtk_text_iter_backward_char (&start))
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break;
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}
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break;
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case ATSPI_TEXT_BOUNDARY_LINE_START:
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gtk_text_view_backward_display_line_start (view, &start);
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end = start;
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gtk_text_view_backward_display_line (view, &start);
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gtk_text_view_backward_display_line_start (view, &start);
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break;
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case ATSPI_TEXT_BOUNDARY_LINE_END:
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gtk_text_view_backward_display_line_start (view, &start);
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if (!gtk_text_iter_is_start (&start))
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{
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gtk_text_view_backward_display_line (view, &start);
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end = start;
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gtk_text_view_forward_display_line_end (view, &end);
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if (!gtk_text_iter_is_start (&start))
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{
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if (gtk_text_view_backward_display_line (view, &start))
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gtk_text_view_forward_display_line_end (view, &start);
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else
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gtk_text_iter_set_offset (&start, 0);
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}
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}
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else
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end = start;
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break;
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default:
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g_assert_not_reached ();
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}
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*start_offset = gtk_text_iter_get_offset (&start);
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*end_offset = gtk_text_iter_get_offset (&end);
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return gtk_text_buffer_get_slice (buffer, &start, &end, FALSE);
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}
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char *
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gtk_text_view_get_text_at (GtkTextView *view,
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int offset,
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AtspiTextBoundaryType boundary_type,
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int *start_offset,
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int *end_offset)
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{
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GtkTextBuffer *buffer;
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GtkTextIter pos, start, end;
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buffer = gtk_text_view_get_buffer (view);
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gtk_text_buffer_get_iter_at_offset (buffer, &pos, offset);
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start = end = pos;
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switch (boundary_type)
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{
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case ATSPI_TEXT_BOUNDARY_CHAR:
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gtk_text_iter_forward_char (&end);
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break;
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case ATSPI_TEXT_BOUNDARY_WORD_START:
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if (!gtk_text_iter_starts_word (&start))
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gtk_text_iter_backward_word_start (&start);
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if (gtk_text_iter_inside_word (&end))
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gtk_text_iter_forward_word_end (&end);
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while (!gtk_text_iter_starts_word (&end))
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{
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if (!gtk_text_iter_forward_char (&end))
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break;
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}
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break;
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case ATSPI_TEXT_BOUNDARY_WORD_END:
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if (gtk_text_iter_inside_word (&start) &&
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!gtk_text_iter_starts_word (&start))
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gtk_text_iter_backward_word_start (&start);
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while (!gtk_text_iter_ends_word (&start))
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{
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if (!gtk_text_iter_backward_char (&start))
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break;
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}
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gtk_text_iter_forward_word_end (&end);
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break;
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case ATSPI_TEXT_BOUNDARY_SENTENCE_START:
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if (!gtk_text_iter_starts_sentence (&start))
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gtk_text_iter_backward_sentence_start (&start);
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if (gtk_text_iter_inside_sentence (&end))
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gtk_text_iter_forward_sentence_end (&end);
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while (!gtk_text_iter_starts_sentence (&end))
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{
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if (!gtk_text_iter_forward_char (&end))
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break;
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}
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break;
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case ATSPI_TEXT_BOUNDARY_SENTENCE_END:
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if (gtk_text_iter_inside_sentence (&start) &&
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!gtk_text_iter_starts_sentence (&start))
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gtk_text_iter_backward_sentence_start (&start);
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while (!gtk_text_iter_ends_sentence (&start))
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{
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if (!gtk_text_iter_backward_char (&start))
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break;
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}
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gtk_text_iter_forward_sentence_end (&end);
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break;
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case ATSPI_TEXT_BOUNDARY_LINE_START:
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gtk_text_view_backward_display_line_start (view, &start);
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gtk_text_view_forward_display_line (view, &end);
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break;
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case ATSPI_TEXT_BOUNDARY_LINE_END:
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gtk_text_view_backward_display_line_start (view, &start);
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if (!gtk_text_iter_is_start (&start))
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{
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gtk_text_view_backward_display_line (view, &start);
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gtk_text_view_forward_display_line_end (view, &start);
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}
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gtk_text_view_forward_display_line_end (view, &end);
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break;
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default:
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g_assert_not_reached ();
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}
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*start_offset = gtk_text_iter_get_offset (&start);
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*end_offset = gtk_text_iter_get_offset (&end);
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return gtk_text_buffer_get_slice (buffer, &start, &end, FALSE);
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}
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char *
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gtk_text_view_get_text_after (GtkTextView *view,
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int offset,
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AtspiTextBoundaryType boundary_type,
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int *start_offset,
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int *end_offset)
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{
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GtkTextBuffer *buffer;
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GtkTextIter pos, start, end;
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buffer = gtk_text_view_get_buffer (view);
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gtk_text_buffer_get_iter_at_offset (buffer, &pos, offset);
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start = end = pos;
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switch (boundary_type)
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{
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case ATSPI_TEXT_BOUNDARY_CHAR:
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gtk_text_iter_forward_char (&start);
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gtk_text_iter_forward_chars (&end, 2);
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break;
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case ATSPI_TEXT_BOUNDARY_WORD_START:
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if (gtk_text_iter_inside_word (&end))
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gtk_text_iter_forward_word_end (&end);
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while (!gtk_text_iter_starts_word (&end))
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{
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if (!gtk_text_iter_forward_char (&end))
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break;
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}
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start = end;
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if (!gtk_text_iter_is_end (&end))
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{
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gtk_text_iter_forward_word_end (&end);
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while (!gtk_text_iter_starts_word (&end))
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{
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if (!gtk_text_iter_forward_char (&end))
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break;
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}
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}
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break;
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case ATSPI_TEXT_BOUNDARY_WORD_END:
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gtk_text_iter_forward_word_end (&end);
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start = end;
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if (!gtk_text_iter_is_end (&end))
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gtk_text_iter_forward_word_end (&end);
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break;
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case ATSPI_TEXT_BOUNDARY_SENTENCE_START:
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if (gtk_text_iter_inside_sentence (&end))
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gtk_text_iter_forward_sentence_end (&end);
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while (!gtk_text_iter_starts_sentence (&end))
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{
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if (!gtk_text_iter_forward_char (&end))
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break;
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}
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start = end;
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if (!gtk_text_iter_is_end (&end))
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{
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gtk_text_iter_forward_sentence_end (&end);
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while (!gtk_text_iter_starts_sentence (&end))
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{
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if (!gtk_text_iter_forward_char (&end))
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break;
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}
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}
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break;
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case ATSPI_TEXT_BOUNDARY_SENTENCE_END:
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gtk_text_iter_forward_sentence_end (&end);
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start = end;
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if (!gtk_text_iter_is_end (&end))
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gtk_text_iter_forward_sentence_end (&end);
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break;
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case ATSPI_TEXT_BOUNDARY_LINE_START:
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gtk_text_view_forward_display_line (view, &end);
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start = end;
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gtk_text_view_forward_display_line (view, &end);
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break;
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case ATSPI_TEXT_BOUNDARY_LINE_END:
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gtk_text_view_forward_display_line_end (view, &end);
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start = end;
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gtk_text_view_forward_display_line (view, &end);
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gtk_text_view_forward_display_line_end (view, &end);
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break;
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default:
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g_assert_not_reached ();
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}
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*start_offset = gtk_text_iter_get_offset (&start);
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*end_offset = gtk_text_iter_get_offset (&end);
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return gtk_text_buffer_get_slice (buffer, &start, &end, FALSE);
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}
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char *
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gtk_text_view_get_string_at (GtkTextView *view,
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int offset,
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AtspiTextGranularity granularity,
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int *start_offset,
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int *end_offset)
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{
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GtkTextBuffer *buffer;
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GtkTextIter pos, start, end;
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buffer = gtk_text_view_get_buffer (view);
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gtk_text_buffer_get_iter_at_offset (buffer, &pos, offset);
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start = end = pos;
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if (granularity == ATSPI_TEXT_GRANULARITY_CHAR)
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{
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gtk_text_iter_forward_char (&end);
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}
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else if (granularity == ATSPI_TEXT_GRANULARITY_WORD)
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{
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if (!gtk_text_iter_starts_word (&start))
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gtk_text_iter_backward_word_start (&start);
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gtk_text_iter_forward_word_end (&end);
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}
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else if (granularity == ATSPI_TEXT_GRANULARITY_SENTENCE)
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{
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if (!gtk_text_iter_starts_sentence (&start))
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gtk_text_iter_backward_sentence_start (&start);
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gtk_text_iter_forward_sentence_end (&end);
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}
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else if (granularity == ATSPI_TEXT_GRANULARITY_LINE)
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{
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if (!gtk_text_view_starts_display_line (view, &start))
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gtk_text_view_backward_display_line (view, &start);
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gtk_text_view_forward_display_line_end (view, &end);
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}
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else if (granularity == ATSPI_TEXT_GRANULARITY_PARAGRAPH)
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{
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gtk_text_iter_set_line_offset (&start, 0);
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gtk_text_iter_forward_to_line_end (&end);
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}
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*start_offset = gtk_text_iter_get_offset (&start);
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*end_offset = gtk_text_iter_get_offset (&end);
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return gtk_text_buffer_get_slice (buffer, &start, &end, FALSE);
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}
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